2. Consider the isomerism of glucose-6-phosphate (G6P) to fructose-6-phosphate (F6P):
$G6P(aq) \rightarrow F6P(aq)$
for which $\Delta_rG^\circ = +1.7 kJ mol^{-1}$ at 25°C. Estimate the fraction f of F6P in equilibrium with G6P at 25°C, where
$f = \frac{[F6P]}{[F6P] + [G6P]}$